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Atlas / NTSB / CHI74FEC39

NTSB CAROL · Event

Event CHI74FEC39

1974-04-25 PONTIAC, Michigan, United States Minor 1 aircraft Status: Completed

Registry · N10AE

FAA Aircraft Registry record.

Make / Model

AVIAT AIRCRAFT INC A-1C-180

Year of manufacture

2018

Engine

LYCOMING O-360-A1P (180 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20180719

ADS-B equipped

Yes — Mode-S A00260

Registrant of record

ELLISON ALAN T

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Historical record (pre-1982)

NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.

Aircraft

SMITH EOS-1 · N10AE

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

D

Airport

OAKLAND PONTIAC

Kind of flying

DB

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Wind

240° / 8 kt

Aircraft history

Serial number

000000001-AE

Pilot

Certificate

GA (GA)

Total hours

3,500

Age

25

Probable cause (from PRE1982.MDB)

H PISTONS.FUEL AIR MIXT LEAN DUE INCREASED RAM AIR

Investigator remarks

ENG MAKE AND MOD HIRTH-650 TWO CYCLE.HOLE IN BOT

Cause factors

  • 68/C/D6 C
    PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause
  • 74/C/AE C
    POWERPLANT PISTON,PISTON RINGS Cause
  • 88/C/CT C
    MISCELLANEOUS ACTS,CONDITIONS EXCESSIVE TEMPERATURE Cause
  • 88/C/95 C
    MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
  • 74/C/CY C
    POWERPLANT OTHER Cause
  • 83/K/I K
    TERRAIN HIGH OBSTRUCTIONS Joint factor

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.

Source: NTSB pre-1982 historical archive. Docket 3 0882. Source file NTSB_1974_3_0882.txt. Modern CAROL record on data.ntsb.gov ↗.